Knock-out for molds



Dec. 28, 1926. 1,611,869

. A. ANDERSON KNOCK-OUT FOR MOLDS Filed May 16, 1925 INVENTOR. ALEXANDER AHDEELfiGDN.

ATTORNEY.

Patented Dec. 28, 1926.

ALEXANDER ANDERSON, OF DETROIT, MICHIGAN, ASSIGNO DETROIT, MICHIGAN.

l,6ll,869

TO EARL HOLLEY, OI

KNOCK-OUT FOR HOLDS.

Application filed my 16, 1925. Serial No. 30,724.

This device relates to an improved knockout adapted to be used with the machine covered by the Candler Patent #1,493,469, issued Ma 13, 1924.

In mol inq machines of the type shown in the Candier patent referred to the iron castings are ejected from the metal molds immediately after they 'set and whilethey are still red hot. Owing to, the distortion IO-that necessarily takes place in the metalmold when molten iron is poured therein, it is very diflicult to keep the knock-out mechanism in exact alignment and the ob ject of this invention is to provide a slight 1 amount of lateral play so'that the pins will not lock when they get out of alignment.

Figure 1 shows a partial cross sectional elevation on the plane ].-1 of Figure 31, showing the knock-out assembled to the shank.

Figure 2 shows in elevation the hockout itself. a

Figure 3 shows the supporting shank.

Figure 4 shows an 4-4 of Figure 1. 7

Figure 5 shows in perspective the collar used.

In the figures, Ais the shank, 'B is the knock-out pin provided with an enlarged head H, C is the retaining collar, the inside diameter of which is a few hundredths of an inch larger than the pin 15. This ring C is provided with two grooves D D. E is the U-shaped locking piece retained in'place by the cotter pin F. The shank A is provided with a cavity G rigidly connected to the knock-out mechanism of the molding machine. Slots J J elevation on the plane said pin in place.

at one end and is threaded at the other so that it can be are provided in shank and these slots are dee enough to break through into the cavity Assembly-The head H, of the knock-out pin B, fits loosel into the cavity G in the end of the shank A. The collar C slides 46 over the knock-out pin B and engages with its head H, and also fits into the opening ,G of the shank A. The slots D D of the collar 0, are arranged tobeinalignment p with the corresponding slots J J the 60 shank A. The U-shaped piece .15 is then slid intolace and the cotter pin F inserted. The knoc -out pin B is thus held endways, but is given a certain amount of lateral pla I 55 l hat I claim is i 1. A device 'for ejecting red hot castings from metal molds, comprising a knock-out pin having a shoulder, a sleeve engaging with said knock-out pin and with said at shoulder, a shank provided with an enlarged end, an opening in said enlarged end adapt- ,ed to rec eivesaid shoulder and said sleeve, locking means for retaining said sleeve and 2. An ejecting device comprising a threadedholder having a hollow enlarged V end, a slotted bushing engaging therein,

a knockout pin having a head engaging with said bushing and located within said to enlarged end of said-holder, a. keeper for retaining the bushing within said enlarged end whilst permitting a limited amount of play to said knock-out pin relative to said holder. In testimony whereof I aflix my signature.

v ALEXANDER ANDERSON.

the enlarged portion'of the 

